How to convert webpage into PDF by using Python

问题

I was finding solution to print webpage into local file PDF, using Python. one of the good solution is to use Qt, found here, https://bharatikunal.wordpress.com/2010/01/.

It didn\'t work at the beginning as I had problem with the installation of PyQt4 because it gave error messages such as \'ImportError: No module named PyQt4.QtCore\', and \'ImportError: No module named PyQt4.QtCore\'.

It was because PyQt4\'s not installed properly. I used to have the libraries located at C:\\Python27\\Lib however it\'s not for PyQt4.

In fact, it simply needs to download from http://www.riverbankcomputing.com/software/pyqt/download (mind the correct Python version you are using), and install it to C:\\Python27 (my case). That\'s it.

Now the scripts runs fine so I want to share it. for more options in using Qprinter, please refer to http://qt-project.org/doc/qt-4.8/qprinter.html#Orientation-enum.

回答1:

You also can use pdfkit:

Usage

import pdfkit
pdfkit.from_url('http://google.com', 'out.pdf')

Install

MacOS: brew install Caskroom/cask/wkhtmltopdf

Debian/Ubuntu: apt-get install wkhtmltopdf

See official documentation for MacOS/Ubuntu/other OS: https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf

回答2:

WeasyPrint

pip install weasyprint  # No longer supports Python 2.x.

python
>>> pdf = weasyprint.HTML('http://www.google.com').write_pdf()
>>> len(pdf)
92059
>>> file('google.pdf', 'wb').write(pdf)

回答3:

thanks to below posts, and I am able to add on the webpage link address to be printed and present time on the PDF generated, no matter how many pages it has.

Add text to Existing PDF using Python

https://github.com/disflux/django-mtr/blob/master/pdfgen/doc_overlay.py

To share the script as below:

import time
from pyPdf import PdfFileWriter, PdfFileReader
import StringIO
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter
from xhtml2pdf import pisa
import sys 
from PyQt4.QtCore import *
from PyQt4.QtGui import * 
from PyQt4.QtWebKit import * 

url = 'http://www.yahoo.com'
tem_pdf = "c:\\tem_pdf.pdf"
final_file = "c:\\younameit.pdf"

app = QApplication(sys.argv)
web = QWebView()
#Read the URL given
web.load(QUrl(url))
printer = QPrinter()
#setting format
printer.setPageSize(QPrinter.A4)
printer.setOrientation(QPrinter.Landscape)
printer.setOutputFormat(QPrinter.PdfFormat)
#export file as c:\tem_pdf.pdf
printer.setOutputFileName(tem_pdf)

def convertIt():
    web.print_(printer)
    QApplication.exit()

QObject.connect(web, SIGNAL("loadFinished(bool)"), convertIt)

app.exec_()
sys.exit

# Below is to add on the weblink as text and present date&time on PDF generated

outputPDF = PdfFileWriter()
packet = StringIO.StringIO()
# create a new PDF with Reportlab
can = canvas.Canvas(packet, pagesize=letter)
can.setFont("Helvetica", 9)
# Writting the new line
oknow = time.strftime("%a, %d %b %Y %H:%M")
can.drawString(5, 2, url)
can.drawString(605, 2, oknow)
can.save()

#move to the beginning of the StringIO buffer
packet.seek(0)
new_pdf = PdfFileReader(packet)
# read your existing PDF
existing_pdf = PdfFileReader(file(tem_pdf, "rb"))
pages = existing_pdf.getNumPages()
output = PdfFileWriter()
# add the "watermark" (which is the new pdf) on the existing page
for x in range(0,pages):
    page = existing_pdf.getPage(x)
    page.mergePage(new_pdf.getPage(0))
    output.addPage(page)
# finally, write "output" to a real file
outputStream = file(final_file, "wb")
output.write(outputStream)
outputStream.close()

print final_file, 'is ready.'

回答4:

here is the one working fine:

import sys 
from PyQt4.QtCore import *
from PyQt4.QtGui import * 
from PyQt4.QtWebKit import * 

app = QApplication(sys.argv)
web = QWebView()
web.load(QUrl("http://www.yahoo.com"))
printer = QPrinter()
printer.setPageSize(QPrinter.A4)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName("fileOK.pdf")

def convertIt():
    web.print_(printer)
    print("Pdf generated")
    QApplication.exit()

QObject.connect(web, SIGNAL("loadFinished(bool)"), convertIt)
sys.exit(app.exec_())

回答5:

Here is a simple solution using QT. I found this as part of an answer to a different question on StackOverFlow. I tested it on Windows.

from PyQt4.QtGui import QTextDocument, QPrinter, QApplication

import sys
app = QApplication(sys.argv)

doc = QTextDocument()
location = "c://apython//Jim//html//notes.html"
html = open(location).read()
doc.setHtml(html)

printer = QPrinter()
printer.setOutputFileName("foo.pdf")
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setPageSize(QPrinter.A4);
printer.setPageMargins (15,15,15,15,QPrinter.Millimeter);

doc.print_(printer)
print "done!"

回答6:

I tried @NorthCat answer using pdfkit.

It required wkhtmltopdf to be installed. The install can be downloaded from here. https://wkhtmltopdf.org/downloads.html

Install the executable file. Then write a line to indicate where wkhtmltopdf is, like below. (referenced from Can't create pdf using python PDFKIT Error : " No wkhtmltopdf executable found:"

import pdfkit


path_wkthmltopdf = "C:\\Folder\\where\\wkhtmltopdf.exe"
config = pdfkit.configuration(wkhtmltopdf = path_wkthmltopdf)

pdfkit.from_url("http://google.com", "out.pdf", configuration=config)

来源：https://stackoverflow.com/questions/23359083/how-to-convert-webpage-into-pdf-by-using-python

标签

python

pdf

webpage

qprinter